59 resultados para Animals-Gravat


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Animal migrations span the globe, involving immense numbers of individuals from a wide range of taxa. Migrants transport nutrients, energy, and other organisms as they forage and are preyed upon throughout their journeys. These highly predictable, pulsed movements across large spatial scales render migration a potentially powerful yet underappreciated dimension of biodiversity that is intimately embedded within resident communities. We review examples from across the animal kingdom to distill fundamental processes by which migratory animals influence communities and ecosystems, demonstrating that they can uniquely alter energy flow, food-web topology and stability, trophic cascades, and the structure of metacommunities. Given the potential for migration to alter ecological networks worldwide, we suggest an integrative framework through which community dynamics and ecosystem functioning may explicitly consider animal migrations.

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Dream Animals is a collection of prose poems based on fairytales, encounters with animals, dreaming, real-world scandals, and strange encounters

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Captive breeding is a high profile management tool used for conserving threatened species. However, the inevitable consequence of generations in captivity is broad scale and often-rapid phenotypic divergence between captive and wild individuals, through environmental differences and genetic processes. Although poorly understood, mate choice preference is one of the changes that may occur in captivity that could have important implications for the reintroduction success of captive-bred animals. We bred wild-caught house mice for three generations to examine mating patterns and reproductive outcomes when these animals were simultaneously released into multiple outdoor enclosures with wild conspecifics. At release, there were significant differences in phenotypic (e.g. body mass) and genetic measures (e.g. Gst and F) between captive-bred and wild adult mice. Furthermore, 83% of offspring produced post-release were of same source parentage, inferring pronounced assortative mating. Our findings suggest that captive breeding may affect mating preferences, with potentially adverse implications for the success of threatened species reintroduction programmes.

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Glucocorticoids hormones (GCs) are intuitively important for mediation of age-dependent vertebrate life-history transitions through their effects on ontogeny alongside underpinning variation in life-history traits and trade-offs in vertebrates. These concepts largely derive from the ability of GCs to alter energy allocation, physiology and behaviour that influences key life-history traits involving age-specific life-history transitions, reproduction and survival. Studies across vertebrates have shown that the neuroendocrine stress axis plays a role in the developmental processes that lead up to age-specific early life-history transitions. While environmental sensitivity of the stress axis allows for it to modulate the timing of these transitions within species, little is known as to how variation in stress axis function has been adapted to produce interspecific variation in the timing of life-history transitions. Our assessment of the literature confirms that of previous reviews that there is only equivocal evidence for correlative or direct functional relationships between GCs and variation in reproduction and survival. We conclude that the relationships between GCs and life-history traits are complex and general patterns cannot be easily discerned with current research approaches and experimental designs. We identify several future research directions including: (i) integration of proximate and ultimate measures, including longitudinal studies that measure effects of GCs on more than one life-history trait or in multiple environmental contexts, to test explicit hypotheses about how GCs and life-history variation are related and (ii) the measurement of additional factors that modulate the effects of GCs on life-history traits (e.g. GC receptors and binding protein levels) to better infer neurendocrine stress axis actions. Conceptual models of HPA/I axis actions, such as allostatic load and reactive scope, to some extent explicitly predict the role of GCs in a life-history context, but are descriptive in nature. We propose that GC effects on life-history transitions, survival probabilities and fecundity can be modelled in existing quantitative demographic frameworks to improve our understanding of how GC variation influences life-history evolution and GC-mediated effects on population dynamics Lay Summary Functional Ecology

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A tracking system based of the IMU8420 data logger has been created. This tracking system can be used to store the various movements of different types of animal's in-between the GPS signals, leading to a much more accurate representation of what the animal is undergoing at any point in time. This data can then be used to determine the behaviors of the animals, and thus new algorithms can be generated to try and mimic this behavior in robotics. The system could be applied to a swarm of animals to determine what an entire swarm is doing, and thus new swarming algorithms can be created.

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Religion and Urbanism contributes to an expanded understanding of 'sustainable cities' in South Asia by demonstrating the multiple, and often conflicting ways in which religion enables or challenges socially equitable and ecologically sustainable urbanisation in the region. In particular, this collection focuses on two aspects that must inform the sustainable cities discourse in South Asia: the intersections of religion and urban heritage, and religion and various aspects of informality.

This book makes a much-needed contribution to the nexus between religion and urban planning for researchers, postgraduate students and policy makers in Sustainable Development, Development Studies, Urban Studies, Religious Studies, Asian Studies, Heritage Studies and Urban and Religious Geography.

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This paper explores the role and perceptions of animals in international development efforts and the possible contradictions between differing priorities of agencies involved in international charitable efforts. Although there is a wide range of purposes for a charitable organization, as shown in the (England and Wales) Charities Act 2011 (c.25) and having one purpose does not preclude a second, organizations concerned with animal welfare are quite distinct from those working for poverty alleviation in the developing world (and indeed the developed world). A fun and novel gift of a donkey may equally be perceived as a cruel, environmentally unsustainable and misguided development effort, a valuable asset, or a burden to a household struggling to feed existing mouths. Exacerbating this situation is the fact that much of the debate around animals in a developing context is heavily polarized between livestock welfare, and animal rights, with a very limited middle ground. This chapter analyzes the underlying tensions between human development, animal welfare, and poverty alleviation, exploring cultural tensions, philosophical tensions and where areas of common ground may be found, with specific reference to development programming. The chapter is framed by contemporary debate on ethics and international development. International development interventions are driven by human welfare concerns, within the broader context of an increasingly globalized world economy. There is a danger in not engaging with ethical considerations with regard to animals and development , as there are potentially complex, interrelated and unintended outcomes. Such outcomes include rising inequality for those who depend on livestock for livelihoods in a business-as-usual scenario of increasing production and intensification; a focus on animal welfare in isolation, with potential accusations of forcing limitations on animal production on low income communities and countries;, and, finally, a moral debate surrounding the issue of whether it is reasonable to require animal welfare standards of people who live in poverty, as a pathway out of poverty. Discourse and practice needs to engage with how to link debate on international development with ethics of livestock production, beyond animal welfare, with global sustainability as core.

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This paper examines the phenomenal popularity of companion animals in Japan, and the way many of these pets are treated as part of the owner’s family. Indeed, some pets are treated as if they are human children. This pet phenomenon was made possible because the Japanese developed a way of seeing their companion animals in anthropomorphic terms, more similar than different to humans. First, this paper describes how this notion has its roots in the Japanese receptivity to the idea that humans and animals can communicate with one another, and the folkloric belief that animals can assume human form and speak. Second, the article details how these ideas and beliefs were consistent with both major Japanese religions, and were sustained in the 20th century by literature and, most recently, anthropomorphic characters in anime and advertising. Finally, the paper argues that there is an anthropomorphic paradox in Japan, whereby the identification of companion animals as possessing human qualities leads to the mistreatment of animals rather than an ethically superior response to animal welfare. While animals benefit materially from being thought of in human terms, being well fed and given the best veterinary care, paradoxically, they can lead miserable lives. Being wheeled in baby strollers and being dressed in designer clothes means that pets have their instincts curbed, and raises questions about the ethics of animal ownership.

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During the writing of this essay, the controversial nonhuman animal rights organisation PETA (People for the Ethical Treatment of Animals) sent out a tweet linking to an online article about the recent PC and Playstation 4 console game No Man’s Sky, in which players are positioned as explorers of countless virtual planets. Encountering the wide array of creatures indigenous to these worlds, players of this game are offered the choice of whether ‘to document them and name them or slaughter them en masse’ (Francisco, ‘PETA’). While an environmental agenda appears to be far from the game designers’ minds, PETA’s Marketing Vice President Joel Bartlett interprets No Man’s Sky as ‘counting on our natural empathy … we have a natural sense of exploration that has been important to human history’ (Francisco, ‘PETA’). Indeed, PETA has immersed itself in the gaming industry by creating its own simple online games in-house, such as the provocative Mario Kills Tanooki, which opposes what it sees as the unethical messages conveyed by Nintendo’s popular Super Mario Bros. franchise. These instances of the intersection of exploration, ethics, empathy, and play raise important questions regarding the potential role(s) of gaming in furthering (or hindering) the welfare of nonhuman animals. This issue becomes more and more urgent not only in a time of ongoing climate change, environmental degradation, and the continued endangerment of countless species around the planet, but also in a time when the gaming industry and the adoption of game design principles in many others grows apace.

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The rights of livestock that are designated as food/farm animals have been a blindspot across development discourse and policies in spite of compelling moral (and socio-ecological) factors. They are regarded as 'resources' to sustain growth, leading to food production systems that support factory farming and invasive animal husbandry practices. The paper argues that religion and sustainable development are unlikely partners in the commodification of animals in these policies. Capitalist-driven interpretations of religion support the objectification of animals. Sustainable development, an efficiency-driven growth paradigm, is concerned with the preservation of finite natural resources. Sentient factory farmed animals are seen as infinite resources.Using Christianity and Hinduism as examples, the paper argues that religion can also shape alternative animal husbandry/food production practices, and expand the social justice element of sustainable development to encompass what I term 'sociozoological justice' in economic systems that heavily involve animals.

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Migratory animals are simultaneously challenged by the physiological demands of long-distance movements and the need to avoid natural enemies including parasites and pathogens. The potential for animal migrations to disperse pathogens across large geographic areas has prompted a growing body of research investigating the interactions between migration and infection. However, the phenomenon of animal migration is yet to be incorporated into broader theories in disease ecology. Because migrations may expose animals to a greater number and diversity of pathogens, increase contact rates between hosts, and render them more susceptible to infection via changes to immune function, migration has the potential to generate both "superspreader species" and infection "hotspots". However, migration has also been shown to reduce transmission in some species, by facilitating parasite avoidance ("migratory escape") and weeding out infected individuals ("migratory culling"). This symposium was convened in an effort to characterize more broadly the role that animal migrations play in the dynamics of infectious disease, by integrating a range of approaches and scales across host taxa. We began with questions related to within-host processes, focusing on the consequences of nutritional constraints and strenuous movement for individual immune capability, and of parasite infection for movement capacity. We then scaled-up to between-host processes to identify what types, distances, or patterns of host movements are associated with the spread of infectious agents. Finally, we discussed landscape-scale relationships between migration and infectious disease, and how these may be altered as a result of anthropogenic changes to climate and land use. We are just beginning to scratch the surface of the interactions between infection and animal migrations; yet, with so many migrations now under threat, there is an urgent need to develop a holistic understanding of the potential for migrations to both increase and reduce infection risk.